Nidek Medical CP-690, Service Manual

Page: 29 / 70

5 - 7
5.4 Replacement of the Chart Motor
Replacement part: Chart motor (33155-E003)
1. Remove the top and bottom cover ASSYs. (See 5.1.)
2. Disconnect all connectors (except for J7) from the BA01 board.
* Cut the tie wrap (T18R) which ties the cables of the chart motor.
3. Unscrew BS3 × 6
ZnC
(n=2) to remove
the P.C. board ASSY (1500).
4. Loosen HH3 × 5 (n=2) and
unscrew SB3 × 6, SW3 and 3PW3
to remove the holder ASSY (1300).
5. Unscrew SB3 × 6 (n=4) to remove the
base plate (M001).
6. Unscrew AS3 × 6
ZnC
(n=4) to remove
the disk cover (M030).
7. Loosen HH4 × 6 (n=4) of the chart
disk retainer.
8. Unscrew SB4 × 10 (n=4), SW4
(n=4) and PW4 (n=4) and remove
the chart motor to replace it with
a new one.
* During this replacement, leave the
chart ASSY in the disk housing.
* Mount the chart motor being careful
of the wiring side.
HH3×5
(BA01 board)
P.C. board ASSY
Holder ASSY
2
SB3×6
BS3×6
ZnC
2
3PW3
SW3
AS3×6
HH4×6
HH4×6
Base plate
PW4
Chart disk retainer
Disk housing
Disk cover
4
ZnC
Chart motor
SB4×10
4
SW4
4
4
SB3×6
4
2
2